Casing for vacuum-bottles and other devices.



F. E. GARLSON.

CASING FOR VACUUM BOTTLES AND OTHER DEVICES.

I APPLICATION FILED FEB 26, 1913. 1,132,512.

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M ATTORNEY Patented Mar. 16,1915.

' ments in Casings for Vacuum- Bottles and snares ra tan erra a rnnnnarcx n. cannson, on NEW BRITAIN, connncr'rcu'nnssrenon- To nannnns, many &. cmnn, or new ZBItI'JIAIIW,CON1 I1i|(J'.lIGU '1, A conronarrom or con- NEGTIOUT.

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T all whom it may concern Be it known that I, FREDERICK son, a citizenof the United States, and: a resident of New Britain, in the county of Hartford, State of Connecticut, have mvented certain new and useful Improveother Devices, of which thefollowing is a specification.

The object of the invention 1s to produce a device of the character described having features of novelty and advantage, espe-v. cially as regards fastening the cap 'tothe I casing.

In the drawings Figure 1 is a central vertical section of a device ofthe classspecified, the bottle being shown in side elevat on. Fig. 2 is a detail view of thecap fastening device with parts broken away to show construction. Fig. 3 is a bottom new of the.

cap.

In the drawings a denotes the casing, b

the cap, 0 the vacuum bottle of ordinary construction, usually made of a very fragile material such as glass, which requires care ful support in the casing and cap to avoid breakage in ordinary use. I

d is a cover for the neck of the bottle, se-

cured to the cap and which may be used as a drinking cup The casing a has a flared top 1 within which fits the flange 1 of the cap, the flange being surmounted by a knurled shoulder 2 which is adapted to be drawn down onto the upper edge of the casing. Secured to-the inner wall of the casing near its upper edge are headed pins 3 'which are adapted to cooperate with bayonet slots 3* in the depending flange of the cap, The vertical portion of the bayonet slotsis bridged as at 4 to stiffen the edges of the slots, and the bridge is curved as clearly shown in Figs. 2 and 3,

to permit of the passage of the heads of the pins into the lateral part of the bayonet slots. The part of the vertical slot below the bridge isof increased width as indicated at 5 to receive a latch e supported on'a spring arm '1 within the upper end of the casing. The spring arm normally holds the latch against the inner surface of the casing, and its upper end is curved away from the casing so as to permit the flange 1 to enter when the cap is to be assembled with the casing. To unite the cap and easing the pins are fitted to the bayonet slots and the fspecification ofLetters' Patent. Patented Marrlfi, 19 15. Application med rebraar ea ie a. Serial no. 750,713. Y

cap-forced down, springing the latch e in awayfrom the wall of the casing; the cap s then turned so as to cause the pins to ride in the inclined lateral parts of the bayonet slots to draw the cap securely down onto the casing. When the cap has been turned far I enough to bring the enlarged vertical parts of the bayonet slots into registering position with the latch the spring snapsthe latch into engagement with the cap, lockingit in position. A pin 2 projects from the latch 1.- In a device of the character described, a caslng, a cap telescoping therewith, bayonet slots in the edge of the inner member, inwardly projecting pins on the outer memher cooperating with said slots, and a spring latch on the outer member adapted to interlock with the mouth of a bayonet-slot when r the parts are engaged. I

2. In a device of the character described, a casing, an annular flange at the upper end thereof of larger diameter than the casing and connected therewith to form. a longitudinal extension thereof, a cap provided with a rim at its lower edge adapted to fit within said annular flange, said rim being provided with bayonet slots, pins projecting inwardly from said flange and adapted to fit in the slots, and a locking device on said flange adapted to. engage the mouth of one of said slots.

3. In a device of the character described, a casing, a cap, provided with a rim at its lower edge adapted to fit within said casing, said rim being rovided with a plurality of bayonet slots 0 enlarged width-at the edge of the rim, pins projecting inwardly from the casing and adapted to fit in said slots, and a latch mounted on the inner wall of the casing and adapted to enter the enlarged portion of one of said slots."

4. In a device of the character described, a casing, an annular flange at the upper end thereof of larger diameter than the casing and connected therewith to form a longitudinal extension thereof, a cap provided with a rim at its lower edge adapted to fit'within said annular flange, said rim being provided with a plurality of bayonet slots, an offset bridge spannin the Wells between the ver adapted to enter one of said slet's below I'Lhe ticai]. portions 0 said slots the widthof Sam bridge whenthe parts ereim interengeged slots being increased below said bridge, position,

headed pins projecting inwardly from sai FREDERJIGK CARLSQNQ 5 flange and adapufl to .fii; and move in said Witnesses:

slots, and. a. yielciingly supported latch; Wnmmmt E. BAKER,

mounted on the inner: Well of the flange and JOSEPH F, Lem, 

